Does Parkinson's disease affect eyesight?

@jojok
Keeping the blocking blinds pulled on sunny days and keeping sunglasses handy are great ways to manage light sensitivity. You've provided some great suggestions! I appreciate your post.

My husband 's eyes have become very light sensitive too and also dry. This coincides with his PD diagnosis three years ago. We keep sunglasses beside his chair and we need to close all the light blocking blinds in the living room on sunny days.

@bruizersmom
I look forward to hearing from you again. Will you continue to post updates?

@hopeful33250 : Thanks so much for the Davis Phinney link! The information was absolutely spot on!!!

I have had dry eyes and double vision long before I was finally diagnosed with Parkinsonism. Surgery only corrects the double vision for a short time. I had cataract surgery a few years ago, so my lenses are mostly prisms for the double vision. I have to have them changed out long before a year is up. I use drops for my dry eyes and ointment before bed. The article was very helpful.

@jatonlouise 👍🤣 to be honest I never expected AI to be “smart” more of an accumulation of what we feed it. I wish I had taken screenshots of all the hilariously wrong responses I’ve had in the past. It is getting better though, as I recently repeated a couple of questions it had failed on before and was hoping to capture-alas my entertainment was thwarted. I use it as a guide, then verify at credentialed sites.
Thank you so much for all the information you shared. I too am having sight issues particularly in one eye, that are puzzling my ophthalmologist.

@windyh, and for everyone in this discussion who is interested in learning more about how Parkinson's might affect your vision, here is a link to an article from the Davis Phinney Foundation website on this topic. After reading this article, you will see that vision can be impacted by Parkinson's. The vision may be affected in various ways, such as blurry vision, dry eyes, convergence (which might include double vision), etc.
https://davisphinneyfoundation.org/blog/parkinsons-and-vision/

Haven't yet discussed it with neurologist, but plan to at the next
visit - I suspect, however, that it may be related to the muscle
weakness ofter associated to Parkinsons

@windyh - did your neurologist have some thoughts on your vision problems and the best place for you to seek help with them in case they are PD-related?

I posed a questioni to Mr. Google and here is what he came back with.
Definition:
Depth perception, also known as stereopsis, is the ability to perceive the distance between objects and their relative positions in space.
Causes:

Eye alignment problems:
Strabismus (crossed eyes) or amblyopia (lazy eye) can disrupt the alignment of the eyes, affecting depth perception.

Refractive errors:
Nearsightedness, farsightedness, or astigmatism can cause blurred vision, which can interfere with depth perception.
Brain injuries or neurological disorders:
Conditions such as multiple sclerosis, stroke, or traumatic brain injury can damage the brain's visual processing centers, leading to depth perception problems. (It's interesting that while MS was mentioned, PD wasn't. This response was generated by AI - Aritifical Intelligence --so Mr. Smarty-Pants AI isn't as "all that" as folks had hoped he would be.)
Aging:
As we age, our eyes may become less efficient at processing visual information, which can affect depth perception.
Certain medications:
Some medications, such as corticosteroids or antihistamines, can cause side effects that impair depth perception.

Symptoms:

Difficulty judging distances
Clumsiness or frequent tripping
Problems with hand-eye coordination
Difficulty driving or navigating stairs
Blurred or double vision
Eye strain or fatigue

Diagnosis:

Eye exam:
An eye doctor will perform a comprehensive eye exam to assess eye alignment, refractive errors, and overall eye health.

Depth perception tests:
Specific tests, such as the Wirt stereopsis test or the Random Dot Stereogram, can assess depth perception abilities.

Treatment:
Treatment depends on the underlying cause of depth perception problems. Options may include:

Eyeglasses or contact lenses:
To correct refractive errors and improve eye alignment.

Vision therapy:
Exercises and activities designed to improve eye coordination and depth perception.
Medications:
In some cases, medications may be prescribed to treat underlying conditions affecting depth perception.
Surgery:
In rare cases, surgery may be an option to correct eye alignment problems or remove tumors that are causing depth perception issues.

Prognosis:
The prognosis for depth perception problems depends on the underlying cause and the effectiveness of treatment. In many cases, with proper diagnosis and treatment, depth perception can be significantly improved or restored.